<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8" />
  <meta name="viewport" content="width=device-width, initial-scale=1.0" />
  <meta http-equiv="X-UA-Compatible" content="ie=edge" />
  <title>Document</title>
  <!-- 导入 vue 文件 -->
  <script src="./lib/vue_2.5.22.js"></script>
  <script src="./lib/vue-router_3.0.2.js"></script>
</head>

<body>
  <!-- 被 vm 实例所控制的区域 -->
  <div id="app">
    <router-link to="/user">User</router-link>
    <router-link to="/register">Register</router-link>
    <router-view></router-view>
  </div>

  <script>
    const User = {
      template: '<h1>User 组件</h1>'
    }

    const Register = {
      template: `<div>
          <h1>Register 组件</h1>
          <hr/>
          <router-view />
        <div>`
    }

    const Tab1 = {
      template: '<h3>tab1 子组件</h3>'
    }

    const Tab2 = {
      template: '<h3>tab2 子组件</h3>'
    }

    // 创建路由实例对象
    const router = new VueRouter({
      // 所有的路由规则
      routes: [
        { path: '/', redirect: '/user' },
        { path: '/user', component: User },
        // children 数组表示子路由规则
        {
          path: '/register', component: Register, children: [
            { path: '/haha', component: Tab1 },
            { path: '/hehe', component: Tab2 }
          ]
        }
      ]
    })
    const vm = new Vue({
      el: '#app',
      data: {},
      router
    })
    // 访问 #/register 能看到啥
    // 访问 #/haha 能看到啥
    // 访问 #/hehe 能看到啥
    // 想想路由嵌套究竟是啥?
  </script>
</body>

</html>